#include<stdio.h>
#include<unistd.h>

int main()
{
    printf("当前进程开始：\n");
    //execl("/usr/bin/ls","ls",NULL);
    execl("/usr/bin/ls","ls","-al",NULL);
    printf(".....\n");
    printf("当前进程结束\n");
    return 0;
}
